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Fedik N, Nebgen B, Lubbers N, Barros K, Kulichenko M, Li YW, Zubatyuk R, Messerly R, Isayev O, Tretiak S. Synergy of semiempirical models and machine learning in computational chemistry. J Chem Phys 2023; 159:110901. [PMID: 37712780 DOI: 10.1063/5.0151833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 07/11/2023] [Indexed: 09/16/2023] Open
Abstract
Catalyzed by enormous success in the industrial sector, many research programs have been exploring data-driven, machine learning approaches. Performance can be poor when the model is extrapolated to new regions of chemical space, e.g., new bonding types, new many-body interactions. Another important limitation is the spatial locality assumption in model architecture, and this limitation cannot be overcome with larger or more diverse datasets. The outlined challenges are primarily associated with the lack of electronic structure information in surrogate models such as interatomic potentials. Given the fast development of machine learning and computational chemistry methods, we expect some limitations of surrogate models to be addressed in the near future; nevertheless spatial locality assumption will likely remain a limiting factor for their transferability. Here, we suggest focusing on an equally important effort-design of physics-informed models that leverage the domain knowledge and employ machine learning only as a corrective tool. In the context of material science, we will focus on semi-empirical quantum mechanics, using machine learning to predict corrections to the reduced-order Hamiltonian model parameters. The resulting models are broadly applicable, retain the speed of semiempirical chemistry, and frequently achieve accuracy on par with much more expensive ab initio calculations. These early results indicate that future work, in which machine learning and quantum chemistry methods are developed jointly, may provide the best of all worlds for chemistry applications that demand both high accuracy and high numerical efficiency.
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Affiliation(s)
- Nikita Fedik
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Benjamin Nebgen
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Nicholas Lubbers
- Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Kipton Barros
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Maksim Kulichenko
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Ying Wai Li
- Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Roman Zubatyuk
- Department of Chemistry, Mellon College of Science, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Richard Messerly
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Olexandr Isayev
- Department of Chemistry, Mellon College of Science, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Sergei Tretiak
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Center for Integrated Nanotechnologies Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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2
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Freixas VM, Malone W, Li X, Song H, Negrin-Yuvero H, Pérez-Castillo R, White A, Gibson TR, Makhov DV, Shalashilin DV, Zhang Y, Fedik N, Kulichenko M, Messerly R, Mohanam LN, Sharifzadeh S, Bastida A, Mukamel S, Fernandez-Alberti S, Tretiak S. NEXMD v2.0 Software Package for Nonadiabatic Excited State Molecular Dynamics Simulations. J Chem Theory Comput 2023; 19:5356-5368. [PMID: 37506288 DOI: 10.1021/acs.jctc.3c00583] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
We present NEXMD version 2.0, the second release of the NEXMD (Nonadiabatic EXcited-state Molecular Dynamics) software package. Across a variety of new features, NEXMD v2.0 incorporates new implementations of two hybrid quantum-classical dynamics methods, namely, Ehrenfest dynamics (EHR) and the Ab-Initio Multiple Cloning sampling technique for Multiconfigurational Ehrenfest quantum dynamics (MCE-AIMC or simply AIMC), which are alternative options to the previously implemented trajectory surface hopping (TSH) method. To illustrate these methodologies, we outline a direct comparison of these three hybrid quantum-classical dynamics methods as implemented in the same NEXMD framework, discussing their weaknesses and strengths, using the modeled photodynamics of a polyphenylene ethylene dendrimer building block as a representative example. We also describe the expanded normal-mode analysis and constraints for both the ground and excited states, newly implemented in the NEXMD v2.0 framework, which allow for a deeper analysis of the main vibrational motions involved in vibronic dynamics. Overall, NEXMD v2.0 expands the range of applications of NEXMD to a larger variety of multichromophore organic molecules and photophysical processes involving quantum coherences and persistent couplings between electronic excited states and nuclear velocity.
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Affiliation(s)
- Victor M Freixas
- Departments of Chemistry and Physics and Astronomy, University of California, Irvine, California 92697-2025, United States
| | - Walter Malone
- Department of Physics, Tuskegee University, Tuskegee, Alabama 36088, United States
| | - Xinyang Li
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Huajing Song
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Hassiel Negrin-Yuvero
- Departamento de Ciencia y Tecnologia, Universidad Nacional de Quilmes/CONICET, B1876BXD Bernal, Argentina
| | - Royle Pérez-Castillo
- Departamento de Ciencia y Tecnologia, Universidad Nacional de Quilmes/CONICET, B1876BXD Bernal, Argentina
| | - Alexander White
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Tammie R Gibson
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Dmitry V Makhov
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
- School of Mathematics, University of Bristol, Bristol BS8 1TW, United Kingdom
| | | | - Yu Zhang
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nikita Fedik
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Maksim Kulichenko
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Richard Messerly
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Luke Nambi Mohanam
- Department of Electrical and Computer Engineering, College of Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Sahar Sharifzadeh
- Department of Electrical and Computer Engineering, College of Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Adolfo Bastida
- Departamento de Química Física, Universidad de Murcia, Murcia 30100, Spain
| | - Shaul Mukamel
- Departments of Chemistry and Physics and Astronomy, University of California, Irvine, California 92697-2025, United States
| | | | - Sergei Tretiak
- Theoretical Division, Center for Nonlinear Studies (CNLS), and Center for Integrated Nanotechnologies (CINT), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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3
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Kulichenko M, Barros K, Lubbers N, Fedik N, Zhou G, Tretiak S, Nebgen B, Niklasson AMN. Semi-Empirical Shadow Molecular Dynamics: A PyTorch Implementation. J Chem Theory Comput 2023. [PMID: 37163680 DOI: 10.1021/acs.jctc.3c00234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Extended Lagrangian Born-Oppenheimer molecular dynamics (XL-BOMD) in its most recent shadow potential energy version has been implemented in the semiempirical PyTorch-based software PySeQM. The implementation includes finite electronic temperatures, canonical density matrix perturbation theory, and an adaptive Krylov subspace approximation for the integration of the electronic equations of motion within the XL-BOMB approach (KSA-XL-BOMD). The PyTorch implementation leverages the use of GPU and machine learning hardware accelerators for the simulations. The new XL-BOMD formulation allows studying more challenging chemical systems with charge instabilities and low electronic energy gaps. The current public release of PySeQM continues our development of modular architecture for large-scale simulations employing semi-empirical quantum-mechanical treatment. Applied to molecular dynamics, simulation of 840 carbon atoms, one integration time step executes in 4 s on a single Nvidia RTX A6000 GPU.
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Affiliation(s)
- Maksim Kulichenko
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Kipton Barros
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nicholas Lubbers
- Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nikita Fedik
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Guoqing Zhou
- NVIDIA Corporation, 2788 San Tomas Expy, Santa Clara, California 95051, United States
| | - Sergei Tretiak
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Benjamin Nebgen
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Anders M N Niklasson
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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4
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Fedik N, Zubatyuk R, Kulichenko M, Lubbers N, Smith JS, Nebgen B, Messerly R, Li YW, Boldyrev AI, Barros K, Isayev O, Tretiak S. Publisher Correction: Extending machine learning beyond interatomic potentials for predicting molecular properties. Nat Rev Chem 2022. [DOI: 10.1038/s41570-022-00446-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Fedik N, Zubatyuk R, Kulichenko M, Lubbers N, Smith JS, Nebgen B, Messerly R, Li YW, Boldyrev AI, Barros K, Isayev O, Tretiak S. Extending machine learning beyond interatomic potentials for predicting molecular properties. Nat Rev Chem 2022; 6:653-672. [PMID: 37117713 DOI: 10.1038/s41570-022-00416-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2022] [Indexed: 11/09/2022]
Abstract
Machine learning (ML) is becoming a method of choice for modelling complex chemical processes and materials. ML provides a surrogate model trained on a reference dataset that can be used to establish a relationship between a molecular structure and its chemical properties. This Review highlights developments in the use of ML to evaluate chemical properties such as partial atomic charges, dipole moments, spin and electron densities, and chemical bonding, as well as to obtain a reduced quantum-mechanical description. We overview several modern neural network architectures, their predictive capabilities, generality and transferability, and illustrate their applicability to various chemical properties. We emphasize that learned molecular representations resemble quantum-mechanical analogues, demonstrating the ability of the models to capture the underlying physics. We also discuss how ML models can describe non-local quantum effects. Finally, we conclude by compiling a list of available ML toolboxes, summarizing the unresolved challenges and presenting an outlook for future development. The observed trends demonstrate that this field is evolving towards physics-based models augmented by ML, which is accompanied by the development of new methods and the rapid growth of user-friendly ML frameworks for chemistry.
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6
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Tkachenko NV, Popov IA, Kulichenko M, Fedik N, Sun Z, Muñoz‐Castro A, Boldyrev AI. Bridging Aromatic/Antiaromatic Units: Recent Advances in Aromaticity and Antiaromaticity in Main‐Group and Transition‐Metal Clusters from Bonding and Magnetic Analyses. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory 87545 Los Alamos NM USA
| | - Maksim Kulichenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Zhong‐Ming Sun
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University 300350 Tianjin China
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánica y Materiales Moleculares Facultad de Ingeniería Universidad Autonoma de Chile El Llano Subercaseaux 2801 Santiago Chile
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
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7
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Kulichenko M, Smith JS, Nebgen B, Li YW, Fedik N, Boldyrev AI, Lubbers N, Barros K, Tretiak S. The Rise of Neural Networks for Materials and Chemical Dynamics. J Phys Chem Lett 2021; 12:6227-6243. [PMID: 34196559 DOI: 10.1021/acs.jpclett.1c01357] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Machine learning (ML) is quickly becoming a premier tool for modeling chemical processes and materials. ML-based force fields, trained on large data sets of high-quality electron structure calculations, are particularly attractive due their unique combination of computational efficiency and physical accuracy. This Perspective summarizes some recent advances in the development of neural network-based interatomic potentials. Designing high-quality training data sets is crucial to overall model accuracy. One strategy is active learning, in which new data are automatically collected for atomic configurations that produce large ML uncertainties. Another strategy is to use the highest levels of quantum theory possible. Transfer learning allows training to a data set of mixed fidelity. A model initially trained to a large data set of density functional theory calculations can be significantly improved by retraining to a relatively small data set of expensive coupled cluster theory calculations. These advances are exemplified by applications to molecules and materials.
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Affiliation(s)
- Maksim Kulichenko
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Justin S Smith
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Benjamin Nebgen
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ying Wai Li
- Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nikita Fedik
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Nicholas Lubbers
- Computer, Computational, and Statistical Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Kipton Barros
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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8
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Kulichenko M, Fedik N, Monfredini A, Muñoz-Castro A, Balestri D, Boldyrev AI, Maestri G. "Bottled" spiro-doubly aromatic trinuclear [Pd 2Ru] + complexes. Chem Sci 2020; 12:477-486. [PMID: 34163610 PMCID: PMC8178750 DOI: 10.1039/d0sc04469e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Following an ongoing interest in the study of transition metal complexes with exotic bonding networks, we report herein the synthesis of a family of heterobimetallic triangular clusters involving Ru and Pd atoms. These are the first examples of trinuclear complexes combining these nuclei. Structural and bonding analyses revealed both analogies and unexpected differences for these [Pd2Ru]+ complexes compared to their parent [Pd3]+ peers. Noticeably, participation of the Ru atom in the π-aromaticity of the coordinated benzene ring makes the synthesized compound the second reported example of ‘bottled’ double aromaticity. This can also be referred to as spiroaromaticity due to the participation of Ru in two aromatic systems at a time. Moreover, the [Pd2Ru]+ kernel exhibits unprecedented orbital overlap of Ru dz2 AO and two Pd dxy or dx2−y2 AOs. The present findings reveal the possibility of synthesizing stable clusters with delocalized metal–metal bonding from the combination of non-adjacent elements of the periodic table which has not been reported previously. Synthesis of a triangular [Pd2Ru]+ complex with delocalized metal–metal bonding between non-adjacent elements of the periodic table, double aromaticity and overlap of d-AOs with different angular momentum.![]()
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Affiliation(s)
- Maksim Kulichenko
- Department of Chemistry and Biochemistry, Utah State University Logan UT 84322 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry, Utah State University Logan UT 84322 USA
| | - Anna Monfredini
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingeniería, Universidad Autonoma de Chile El Llano Subercaseaux 2801 Santiago Chile
| | - Davide Balestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University Logan UT 84322 USA
| | - Giovanni Maestri
- Department of Chemistry, Life Sciences and Environmental Sustainability, Università di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
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9
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Fedik N, Mu C, Popov IA, Wang W, Wang J, Wang H, Bowen KH, Boldyrev AI, Zhang X. Boron‐Made N
2
: Realization of a B≡B Triple Bond in the B
2
Al
3
−
Cluster. Chemistry 2020; 26:8017-8021. [DOI: 10.1002/chem.202001159] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/05/2020] [Indexed: 01/23/2023]
Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Chaonan Mu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Wei Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Jie Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Haopeng Wang
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Kit H. Bowen
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
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10
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Liu G, Fedik N, Martinez‐Martinez C, Ciborowski SM, Zhang X, Boldyrev AI, Bowen KH. Reply to the Comment on “Realization of Lewis Basic Sodium Anion in the NaBH
3
−
Cluster”. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005259] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry Johns Hopkins University Baltimore Maryland 21218 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University Logan Utah 84322 USA
| | | | | | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 30007 China
| | | | - Kit H. Bowen
- Department of Chemistry Johns Hopkins University Baltimore Maryland 21218 USA
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11
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Liu G, Fedik N, Martinez-Martinez C, Ciborowski SM, Zhang X, Boldyrev AI, Bowen KH. Reply to the Comment on "Realization of Lewis Basic Sodium Anion in the NaBH 3 - Cluster". Angew Chem Int Ed Engl 2020; 59:8760-8764. [PMID: 32350985 DOI: 10.1002/anie.202005259] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Indexed: 12/25/2022]
Abstract
We reply to the comment by S. Pan and G. Frenking who challenged our interpretation of the Na- :→BH3 dative bond in the recently synthesized NaBH3 - cluster. Our conclusion remains the same as that in our original paper (https://doi.org/10.1002/anie.201907089 and https://doi.org/10.1002/ange.201907089). This conclusion is additionally supported by the energetic pathways and NBO charges calculated at UCCSD and CASMP2(4,4) levels of theory. We also discussed the suitability of the Laplacian of electron density (QTAIM) and Adaptive Natural Density Partitioning (AdNDP) method for bond type assignment. It seems that AdNDP yields more sensible results. This discussion reveals that the complex realm of bonding is full of semantic inconsistencies, and we invite experimentalists and theoreticians to elaborate this topic and find solutions incorporating different views on the dative bond.
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Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah, 84322, USA
| | | | - Sandra M Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
| | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin, 30007, China
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah, 84322, USA
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland, 21218, USA
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12
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Kulichenko M, Fedik N, Steglenko D, Minyaev RM, Minkin VI, Boldyrev AI. Periodic F-defects on the MgO surface as potential single-defect catalysts with non-linear optical properties. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110680] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Kulichenko M, Fedik N, Boldyrev A, Muñoz‐Castro A. Expansion of Magnetic Aromaticity Criteria to Multilayer Structures: Magnetic Response and Spherical Aromaticity of Matryoshka‐Like Cluster [Sn@Cu
12
@Sn
20
]
12−. Chemistry 2020; 26:2263-2268. [DOI: 10.1002/chem.201905088] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/17/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Maksim Kulichenko
- Department of Chemistry and Biochemistry Utah State University Logan UT 84322-0300 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University Logan UT 84322-0300 USA
| | - Alexander Boldyrev
- Department of Chemistry and Biochemistry Utah State University Logan UT 84322-0300 USA
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánica y Materiales Moleculares Facultad de Ingeniería Universidad Autonoma de Chile El Llano Subercaseaux 2801 Santiago Chile
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Fedik N, Kulichenko M, Steglenko D, Boldyrev AI. Can aromaticity be a kinetic trap? Example of mechanically interlocked aromatic [2-5]catenanes built from cyclo[18]carbon. Chem Commun (Camb) 2020; 56:2711-2714. [DOI: 10.1039/c9cc09483k] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Aromaticity serves as a kinetic trap for mechanically interlocked cyclo[18]carbon rings.
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Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Maksim Kulichenko
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Dmitriy Steglenko
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don 344090
- Russia
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
- Institute of Physical and Organic Chemistry
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15
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Fedik N, Kulichenko M, Steglenko D, Boldyrev AI. Correction: Can aromaticity be a kinetic trap? Example of mechanically interlocked aromatic [2-5]catenanes built from cyclo[18]carbon. Chem Commun (Camb) 2020; 56:4023. [DOI: 10.1039/d0cc90137g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Can aromaticity be a kinetic trap? Example of mechanically interlocked aromatic [2-5]catenanes built from cyclo[18]carbon’ by Nikita Fedik et al., Chem. Commun., 2020, 56, 2711–2714.
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Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Maksim Kulichenko
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Dmitriy Steglenko
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don 344090
- Russia
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
- Institute of Physical and Organic Chemistry
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16
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Liu G, Fedik N, Martinez‐Martinez C, Ciborowski SM, Zhang X, Boldyrev AI, Bowen KH. Realization of Lewis Basic Sodium Anion in the NaBH
3
−
Cluster. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907089] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry Johns Hopkins University Baltimore MD 21218 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University Logan UT 84322 USA
| | | | | | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 30007 China
| | | | - Kit H. Bowen
- Department of Chemistry Johns Hopkins University Baltimore MD 21218 USA
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17
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Liu G, Fedik N, Martinez-Martinez C, Ciborowski SM, Zhang X, Boldyrev AI, Bowen KH. Realization of Lewis Basic Sodium Anion in the NaBH 3 - Cluster. Angew Chem Int Ed Engl 2019; 58:13789-13793. [PMID: 31313422 DOI: 10.1002/anie.201907089] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Indexed: 12/22/2022]
Abstract
We report a Na:- →B dative bond in the NaBH3 - cluster, which was designed on the principle of minimum-energy rupture, prepared by laser vaporization, and characterized by a synergy of anion photoelectron spectroscopy and electronic structure calculations. The global minimum of NaBH3 - features a Na-B bond. Its preferred heterolytic dissociation conforms with the IUPAC definition of dative bond. The lone electron pair revealed on Na and the negative Laplacian of electron density at the bond critical point further confirm the dative nature of the Na-B bond. This study represents the first example of a Lewis adduct with an alkalide as the Lewis base.
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Affiliation(s)
- Gaoxiang Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, 84322, USA
| | | | - Sandra M Ciborowski
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center (ReCAST), College of Chemistry, Nankai University, Tianjin, 30007, China
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, 84322, USA
| | - Kit H Bowen
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
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18
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Inside Cover: Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−
(Angew. Chem. Int. Ed. 25/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/anie.201905963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- College of Chemistry and Chemical EngineeringCentral South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical DivisionLos Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of ChemistryUniversity of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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19
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- College of Chemistry and Chemical EngineeringCentral South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical DivisionLos Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of ChemistryUniversity of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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20
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019; 58:8367-8371. [DOI: 10.1002/anie.201904109] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of Chemistry University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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21
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of Chemistry University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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22
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Kulichenko M, Fedik N, Bozhenko KV, Boldyrev AI. Hydrated Sulfate Clusters SO42–(H2O)n (n = 1–40): Charge Distribution Through Solvation Shells and Stabilization. J Phys Chem B 2019; 123:4065-4069. [DOI: 10.1021/acs.jpcb.9b01744] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maksim Kulichenko
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Nikita Fedik
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Konstantin V. Bozhenko
- Department of Physical and Colloid Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow 117198, Russian Federation
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka 142432, Moscow Region, Russian Federation
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
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23
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Kulichenko M, Fedik N, Bozhenko KV, Boldyrev AI. Inorganic Molecular Electride Mg
4
O
3
: Structure, Bonding, and Nonlinear Optical Properties. Chemistry 2019; 25:5311-5315. [DOI: 10.1002/chem.201806372] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Maksim Kulichenko
- Department of Chemistry and BiochemistryUtah State University Old Main Hill 300 Logan Utah 84322 USA
| | - Nikita Fedik
- Department of Chemistry and BiochemistryUtah State University Old Main Hill 300 Logan Utah 84322 USA
| | - Konstatin V. Bozhenko
- Department of Physical and Colloid ChemistryPeoples' Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St Moscow 117198 Russian Federation
- Institute of Problems of Chemical PhysicsRussian Academy of Sciences, Chernogolovka 142432 Moscow Region Russia
| | - Alexander I. Boldyrev
- Department of Chemistry and BiochemistryUtah State University Old Main Hill 300 Logan Utah 84322 USA
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24
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Tkachenko NV, Steglenko D, Fedik N, Boldyreva NM, Minyaev RM, Minkin VI, Boldyrev AI. Superoctahedral two-dimensional metallic boron with peculiar magnetic properties. Phys Chem Chem Phys 2019; 21:19764-19771. [DOI: 10.1039/c9cp03786a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel two-dimensional ferromagnetic stable boron material has been predicted and exhaustively studied with DFT methods. Its magnetism can be described by the presence of two unpaired delocalized bonding elements inside each distorted octahedron.
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Affiliation(s)
| | - Dmitriy Steglenko
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don
- Russian Federation
| | - Nikita Fedik
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
- Institute of Physical and Organic Chemistry
| | - Natalia M. Boldyreva
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don
- Russian Federation
| | - Ruslan M. Minyaev
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don
- Russian Federation
| | - Vladimir I. Minkin
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don
- Russian Federation
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
- Institute of Physical and Organic Chemistry
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25
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Fedik N, Boldyrev AI, Muñoz-Castro A. Aromatic character of [Au13]5+ and [MAu12]4+/6+ (M = Pd, Pt) cores in ligand protected gold nanoclusters – interplay between spherical and planar σ-aromatics. Phys Chem Chem Phys 2019; 21:25215-25219. [DOI: 10.1039/c9cp04477a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Ligand-protected superatoms are able to behave as both spherical and planar aromatic species, providing a strong link between spherical and planar σ-aromatics, which can be controlled selectively by tuning their redox charge states.
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Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | | | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares
- Facultad de Ingenieria
- Universidad Autonoma de Chile
- Santiago
- Chile
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26
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Abstract
Coronene is known in chemistry as an aromatic or even superaromatic molecule while it has 24 π-electrons which does not conform to the 4 n + 2 Huckel's rule. Chemical bonding description of it is not settled in chemistry and five models were reported in the literature. According to our model, coronene has two concentric π-systems responsible for aromaticity inside of the molecule. In addition to that there are six peripheral 2c-2e π-bonds, which makes coronene aliphatic/aromatic at the same time. However, recent experiments and calculations put in question the presence of peripheral π-bonds. In order to resolve this issue, we computationally studied reaction mechanism of the Cl2 molecule with C2H4, C6H6, and C24H12. As it turned out, coronene behaves in a way similar to ethylene by adding Cl2 molecule. Thus, it proves that coronene indeed has peripheral double bonds which is also consistent with its experimental geometrical features. Our chemical bonding model allows to identify the most reactive atoms in coronene and other PAHs; therefore, it is a matter of importance for combustion and soot formation studies.
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Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry , Utah State University , Logan , Utah 84322 , United States
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry , Utah State University , Logan , Utah 84322 , United States
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